SOND, a sleep tech startup from Bose’s former head of sleep, exits stealth with $7M
Source: TechCrunch
Traditionally, sleep earbuds have been designed to mask outside noise and promote sleep with calming sounds. Today, Boston‑based startup SOND is introducing a new type of earbuds that actively intervene to encourage better sleep.
Overview
Founded by a pair of MIT grads—one of whom is Bose’s former Head of Global Sleep—SOND emerged from stealth on Wednesday with $7 million in funding and unveiled its debut product: Dreambuds. The closed‑loop, in‑ear system captures 12 physiological signals from the wearer and acts on them in real time to help users achieve better sleep.
Image credit: SOND
Funding
The initial $7 M round was led by:
- E14 Fund (MIT‑affiliated)
- Crosslink Capital
- Ubiquity Ventures
- Alumni Ventures
- Meach Cove Capital
- John Abele, co‑founder of Boston Scientific
How Dreambuds Works
Signal Capture
The earbuds monitor a suite of biosignals, including:
- Respiration
- Heart‑rate variability (HRV)
- Cardiorespiratory coupling
- Sleep staging
- Body position
- Snoring
- Seismocardiography (SCG – mechanical vibrations of the chest wall)
Real‑Time Cloud AI
Data streams to a cloud‑based AI sleep coach, which:
- Selects an existing audio program or generates a custom one on demand
- Learns over time which programs work best for each individual
Image credit: SOND
User Interaction
Users can:
- Speak to the AI coach for insights or specific programs
- Stream podcasts directly from the case (optional)
- Request AI‑generated content, such as a themed sleep story
Founders
- Yadid Ayzenberg – CEO; former Head of Sleep Products at Bose (launched Sleepbuds 2). After Bose exited the sleep market, he founded SOND in February 2022.
- Amir Lazarovich – CTO; former senior software engineering manager at Google.
“I had spent, at this time, a significant amount of time around physiology, around sensors, around audio… I was meant to do this,” – Ayzenberg
The two met at MIT when Lazarovich needed a mattress; Ayzenberg offered one from his room, sparking a lifelong friendship that later turned into a business partnership.
Image credit: SOND
Product Design & Experience
- Phone‑Free Operation – The charging case houses Wi‑Fi, Bluetooth, an OLED display, physical buttons, and a speaker. The speaker can act as an alarm, allowing users to wake up even if the earbuds are not in place.
- Simple Controls – Double‑tap the buds to summon the AI coach; no phone needed.
“Giving an insomniac a phone is like running an AA meeting in a liquor store,” – Ayzenberg
Image credit: TechCrunch
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Context‑Aware Coaching – The AI responds based on the moment of interaction:
- Before bedtime: “Are you ready to wind down?”
- After waking: “How was your night?”
-
Safety & Comfort – The coach never speaks unless activated by the double‑tap gesture, preventing startling or creepy experiences.
Image credit: TechCrunch
Data & Insights
Dreambuds owners can review:
- Detailed sleep metrics (HRV, respiration, snoring, etc.)
- Hypnograms (sleep‑cycle graphs)
- Historical trends and personalized recommendations
The AI coach leverages this data to suggest breathing exercises, calming tracks, soundscapes, binaural beats, or other interventions that have proven effective for the individual user.
Closing Thoughts
Ayzenberg emphasizes that Dreambuds are not a “what‑could‑have‑been” version of Bose’s next‑gen Sleepbuds. Instead, they represent a distinct approach: an earbud that ends the experience, while the surrounding ecosystem (case, AI coach, cloud analytics) does the heavy lifting.
“Maybe the form factor is an earbud, but that’s where it ends,” – Ayzenberg
With a robust sensor suite, real‑time AI, and a phone‑free design, Dreambuds aim to set a new standard for sleep wearables—shifting from passive noise cancellation to active, personalized sleep improvement.
Companion app to learn more about their sleep patterns.
**Image Credits:** SOND
The buds themselves have a unique look, as the team put the sensors facing out — opting for an artistic pattern of sensors instead of trying to hide the technology. The buds also feature wide‑frequency drivers for high‑fidelity audio, along with microphones and sensors for motion detection.
SOND has run a couple of comfort studies and betas, and now aims to bring the devices into mass production by Q2 2026, following a crowdfunding campaign to raise additional funds. The company is currently accepting reservations on its [website](https://sond.com/).
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